British number one Dan Evans won consecutive matches on the ATP Tour for the first time since February, beating American Frances Tiafoe to reach the European Open quarter-finals.
Evans, ranked 35th in the world, won 7-6 (7-3) 6-2 against Tiafoe in Antwerp.
The 30-year-old will face Russian third seed Karen Khachanov or Belgium's Zizou Bergs in the last eight.
In the doubles, fourth seeds Jamie Murray and Neal Skupski lost 6-4 6-4 to Rohan Bopanna and Matwe Middelkoop.
Elsewhere, Katie Boulter earned victory in her first tour-level match since March, enjoying a 6-4 7-6 (7-3) win over Poland's Martyna Kubka at the W15 Sharm El Sheikh.